Hornets legend Graham Taylor is to have a train named after him.
London Midland said the honour will be "a lasting tribute to Graham's memory".
Rita Taylor, Graham's widow, will help launch the new train at Watford Junction on June 2.
The train will pass through stations serving many places associated with Graham’s long career including Watford Junction, Aston, Wolverhampton, Wembley Central and Lichfield Trent Valley.
Taylor - who lived in Kings Langley - died suddenly from a heart attack in January, aged 72.
Under Taylor and rock star Sir Elton, Watford won five promotions, reached the FA Cup final, the last 16 of the UEFA Cup and turned an unfashionable club with a dog track into the original family club.
The Class 350 train will remain named "Graham Taylor OBE" for the rest of its working life.
London Midland said this was only the second time they had named a train - the first was after the Lichfield festival.
The unveiling ceremony, being held on platform 10, will include short speeches and music performed by a string quartet.
Steve Helfet, head of West Coast services at London Midland, said: “Graham played such an influential role at football clubs across the length and breadth of the country, not least here in Watford.
The train as it stands now. It will soon be named "Graham Taylor OBE"
"We wanted to do something special for the local community and dedicate one of our trains to his memory.
“The train will be fitted with a commemorative name plate and will be running past many of the locations that were so important in Graham’s career, both on the West Coast main line and in the West Midlands.
“We hope that passengers travelling on this train in the future will take a few moments to remember Graham, a true football hero.”
Guests for the unveiling are invited to arrive at 11.30am.
Capacity on the platform is limited and members of the public who are not invited guests may be refused access to the platform.